Want to plant a garden with little up-keep? that will make it through a TX drought and save water? Use natives. Although I do not believe this book to be entirely comprehensive (TX is huge and covers many climates), it is the most comprehensive reference I have found for TX native gardening.
The Wasowski's give useful comments on each plant - including info on butterfly/bird attraction, how far out of the native range the plant can go, and sometimes give specie or cultivar options. Each plant listing has light/water/soil requirements, TX zones in which the plant is found, a color picture, sizes, how the plant is best propogated, etc. The TX zones are well described and examples of garden designs are given in map form for each. Pictures of private gardens are given throughout. Excellent index.
Although the Wasowskis themselves don't have an only- natives garden, they wanted to show that xeriscaping can be lush and beautiful and take many design forms. I applaud their success. Well worth the price. Wish I had bought the hardback form.